WinForm下常用的UI控制代码

0010: 控制Enter 转 Tab

        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {
            if (keyData == Keys.Enter
                && (!(ActiveControl is TextBox) || !((TextBox)ActiveControl).AcceptsReturn)
                && (!(ActiveControl is Button || ActiveControl is UIButton)))
            {
                SendKeys.SendWait("{Tab}");
                return true;
            }
            if (keyData == (Keys.Enter | Keys.Shift))
            {
                SendKeys.SendWait("+{Tab}");
                return true;
            }
            return base.ProcessCmdKey(ref msg, keyData);
        }

0020: 控制TEXTBOX只能输入数字

            //全角占一个汉字,半角点半个汉字,所以在字节上是不同的
            //全角数字"KeyChar"=2,半解数字"KeyChar"=1
            byte[] array = System.Text.Encoding.Default.GetBytes(e.KeyChar.ToString());
            //array.LongLength,而不是array.Length
            if (!char.IsDigit(e.KeyChar) || array.LongLength == 2) e.Handled = true;
            //'\b'是退格键值
            if (e.KeyChar == '\b' || (e.KeyChar == '.'&&!sPhotoId.Text.Contains(".")))
                e.Handled = false;